Trolley



(No Model.)

0. L. KIRSGH.

TROLLEY No. 593,847. PatentedNov. 16, .1897.'

. -flm UNITED .STATES OSWALD L. KIRSCH, OF WEST VIEW, PENNSYLVANIA.

TROLLEY.

SPECIFICATION forming1 part of Letters Patent No. 593,847, dated November 16, 1897.

Application filed April 24, 1897. Serial No. 638,594. (N0 mOdel-l Y To all whom it may concern.'

Be it known that I, O'swALD L. KiRscH, a citizen of the United States of America, residing at West View, in the county of Allegheny and State of Pennsylvania, have invented certain new'and useful Improvements in Trolleys, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in trolleys, and has for its object to provide a trolley having a vertical and a radial movement, as may be required bythe relative position of the car and the overhead wire, and by reason of the radial movement obtained will serve to keep the trolley-wheel in true engagement with the overhead wire, either when the car is upon a straight track or a curve; and to this end the invention J'inally consists in the novel construction, combination, and arrangement of parts to be hereinafter more specically described, and particularly pointed out in the claim.

In describing the inventionin detail reference is-had to the accompanying drawings, forming a part of this specification, and wherein like letters of reference indicate similar parts throughout both views, 'in which- Figure l is a vertical sectional view of my improved trolley. Fig. 2 is a cross-sectional view taken on the line X X of Fig. 1 with the frame partly broken away.

Referring now to the drawings by reference-letters, d d represent the side braces of the frame, which are connected together by end pieces b b, said frame carrying'a baseplate c, in which is journaled a shaft or fulcrum-pin d, the base-plate e of which is rigidly secured to the car. The side braces d c have journaled therein a plate f, in which is secured a casing g, which receives the trolleypole h, carrying an ordinary harp lo on its upper end, in which is journaled the trolleywheel Z. The trolley-pole h is held in the proper position within the casing g by means of a screw-threaded collar m in the upper end -of the casing and an interior collar or flange n near the base of the casing, said pole having arranged thereon between the collar m and the collar or flange n a coil-spring o, said spring having its upper end secured to the pole h in any suitable manner. In the drawings I have shown the end passing through an aperture in the pole. Coil-springs p of equal strength are connected to the plate f and to the end piece h, which serves to hold the pole normally in a vertical position. It will be observed that by this arrangement the trolleypole is permitted to move vertically, so as to conform to the required height between the top of the car and the current-wire, and also the pole will have a radial movement as the car is upon a curve, so as to permit the trolleywheel to ride at all times in true engagement with the current-wire, for as the car strikes the curve the overhead wire bearing against the flange of the trolley-wheel will revolve the trolley-pole so as to keep the wheel in the same position as it would assume on a straight track and ythus prevent the liability of the wheel leaving the wire. The trolley-pole further, instead of assuming an inclined position, as in the ordinary manner, is adapted to be used in a vertical position, which will obviate the necessity of changing the pole at the end of the line, as is now the case.

A rope may of course be attached to the trolley-pole as in the ordinary manner for manipulating the same; but this I have not thought necessary to show in my illustration.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

In a trolley, the combination of a base-plate e secured to the top of the car, a shaft or fulcrum-pin secured to said plate, a base-plate c, pivoted to said pin, a frame supported by the base-plate c, a plate f, journaled in said frame, a casing secured in said plate f, having a collar in its upper end and a flange intermediate the ends, a trolley-pole h, operating in said casing, a coil-spring surrounding said pole and held in position by the collar and flange, the upper end of said spring being secured to the pole, a trolley-wheel suitably secured in the end of the trolley-pole, and coil-springs secured to the plate f, and to the ends of the frame substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

-OSVALD L. KIRSCH.

Witnesses:

n. c. EVERT, THos. M. BOYD, J r. 

